Samsung Galaxy Note® 4 - View, Open or Close Recently Used Apps
To view the most recently used apps, tap the Recent apps icon (located in the lower-left; next to the Home button) and scroll through the list of apps.
If necessary, tap the screen to display the Recent apps icon.
To prevent Chrome tabs from appearing on the list:
Tap Chrome .
If unavailable, navigate: Apps > Chrome.
Tap the Menu icon (located in the upper-right).
Tap Merge tabs and apps.
Tap the Merge tabs and apps switch (located at the top) to turn off .
To Open or Close:
Open: Scroll to and tap the desired app(s) in the list.
Close: Scroll through the list of apps, hold the app then swipe the screen left or right.